Finding the Third Proportional to 55,262.25 and 84,480.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,262.25 : 84,480.75 = 84,480.75 : x
2. Step 2: Convert to fraction form
   55,262.25/84,480.75 = 84,480.75/x
3. Step 3: Cross multiply
   55,262.25x = 84,480.75 × 84,480.75
4. Step 4: Simplify right side
   55,262.25x = 7,136,997,120.56
5. Step 5: Solve for x
   x = 7,136,997,120.56/55,262.25
6. Step 6: Final answer
   x = 129,147.78